目的 基于UPLC-QTOF/MS代谢组学技术，鉴定不同区段鹿茸差异代谢小分子物质，结合组织学形态观察，分析差异代谢物参与的代谢途径。方法 梅花鹿标准三叉茸冻干处理，切片观察组织形态学表现，从上至下分为3个区段，分别为VAU、VAM和VAB，基于UPLC-QTOF/MS技术，结合主成分分析及最小二乘判别分析方法，解析鹿茸不同区段之间的差异代谢物。结果 共鉴定出鹿茸中代谢小分子物质124种，基于差异代谢物中差异倍数（FC）数值高于2.2进一步筛选出在鹿茸不同区段相对含量差异较大的16种物质，分别对比了不同区段中各物质的相对含量。结论 基于非靶向代谢组学分析冻干鹿茸代谢小分子物质组成，通过相邻分区比较发现，各分区之间内源性代谢物有一定差异，为揭示其功能提供了数据支持。

Objective To identify the differential metabolic small molecule substances in Cervi Cornu Pantotrichum (CCP) of different segments based on UPLC-QTOF/MS metabonomics technology, and analyze the metabolic pathways involved by differential metabolites combined with histological observation. Methods The standard trident antler of sika deer (Cervus nippon) were treated by freeze-drying. The tissue morphology was observed by section. The tissue morphology was divided into three sections from top to bottom, VAU, VAM, and VAB. The differential metabolites were analyzed by UPLC-QTOF/MS technology, principal component analysis, and least squares discriminant analysis. Results A total of 124 kinds of metabolic small molecular substances were identified in CCP. Based on the FC value of differential metabolites higher than 2.2, 16 substances with different relative contents in different parts of CCP were further screened, and the relative content of each substance in different parts were compared. Conclusion This experiment is based on non-targeted metabonomics to analyze the composition of metabolic small molecules in freeze-dried CCP. By comparing the adjacent zones, it is found that there are some differences in endogenous metabolites among the zones, which provides data support for revealing their functions.

国家重点研发计划项目（2018YFC1706602）；吉林省科技发展计划项目（20190304006YY）